gross vehicle weight

the door jam tag on my 79 f-250 says my GVW is 7400lb/3356kg. i want it to be higher. what constitutes an increase in a vehcile's GVR? more leaf springs, for one i'm sure. but do the axles and the frame come into play when defining a GVW? any help is appreciated!

__________________
***lets all just get along, chevs have good points too! and fords have their bad points! to each their own, right?***

This forum is owned and operated by Internet Brands, Inc., a Delaware corporation. It is not authorized or endorsed by the Ford Motor Company and is not affiliated with the Ford Motor Company or its related companies in any way. Ford® is a registered trademark of the Ford Motor Company.